JP4617163B2 - Walk-type field cultivator - Google Patents

Description

The present invention relates to a walking type tiller.

2. Description of the Related Art Conventionally, a walking type tiller having a tilling device provided in front and a tilling transmission case for transmitting a driving force from an engine to the tilling device is known (see, for example, Patent Document 1).
Japanese Patent No. 3015821

  However, in the above-mentioned walking type tiller, the tilled soil generated by the tiller on the front side scatters backward, and the workers behind the tillage work and the parts behind the tiller may become dirty or mud may adhere There was a drawback.

In order to solve the above problems, the present invention provides a tilling device 6 provided with a tilling device 6 in front of the left and right wheels 4 and a tilling transmission case 1 for transmitting a driving force from the engine 7 to the tilling device 6. When the ribs 21 projecting in the left-right direction to block the scattered soil to the rear at the time of tillage are integrally provided at a position behind the tillage device 6 in the transmission case 1, the left and right wheels 4 provided at the rear of the tillage device 6 are provided. The first feature is that the ribs 21 are located between them and a cover 23 is provided separately from the ribs 21 to cover the upper side of the tilling device 6 .

  Second, the rib 21 is provided with a handle 22 for lifting the fuselage.

  According to the structure of this invention comprised as mentioned above, since this walk type tiller has a tilling device ahead, an operator is located in the back of a tilling device. And because the ribs block the scattered soil behind the tillage, the workers behind the tillage work and the parts behind the ribs, such as the mud that splashes towards the engine, etc. are reduced, the above workers and each part etc. There is an effect that it is possible to prevent adhesion of dirt and mud.

  At this time, since the ribs are integrally provided in the tillage transmission case, it is not necessary to separately provide a shielding member for shielding the scattered soil, and the scattered soil shielding mechanism is easily installed at a low cost with a simple structure. There is also an advantage that it can be done.

  By providing a handle for lifting the fuselage on the rib, there is no need to separately provide a handle mounting portion, and the handle mounting structure can be configured easily and at low cost. .

1 and 2 are a side perspective view and a bottom perspective view of a walking type management machine which is a walking type tiller employing the present invention . A mission case 1 having a bifurcated lower part in a side view constitutes a fuselage frame. The axle 2 protrudes from the lower rear, which is the lower end side of the bifurcated one of the mission case 1. The rotary shaft 3 protrudes from the lower front side, which is the other lower end side of the mission case 1 which is divided into two.

  Wheels 4 are provided on both the lower left and right sides of the transmission case 1 that are supported by the axle 2. Rotary 6 that is a tilling device for tillage is pivotally supported on the lower front side of the transmission case 1 by being pivotally supported by the rotary shaft 3.

  An engine 7 is mounted on the top of the mission case 1. The engine 7 is attached to the transmission case 1 side so that the center of gravity is located behind the intermediate position between the rotary shaft 3 and the axle 2. The engine 7 is disposed above the axle 2. The upper part of the engine 7 is covered with a bonnet 8.

  In the transmission case 1, a transmission including a traveling transmission mechanism that shifts the traveling driving force for the wheels 4 and a rotary transmission mechanism that varies the rotary driving force for the rotary 6 is configured. A driving force is transmitted from the engine 7 to the transmission via a belt transmission mechanism or the like in the transmission case 9.

  Transmission of driving force from the engine 7 to the transmission is freely controlled by the main clutch. As the main clutch is engaged, a driving force is transmitted from the engine 7 to the transmission, and the wheels 4 and the rotary 6 are rotationally driven. The transmission case serves as both a traveling transmission case that transmits driving force from the engine 7 to the wheels 4 and a tillage transmission case that transmits driving force from the engine 7 to the rotary 6.

  A pair of left and right brackets 11 are bolted to the rear of the mission case 1 obliquely upward. A handle 12 is attached to the rear end of the bracket 11 so as to be swingable back and forth. The handle 12 is provided with a clutch operating portion 13 for swinging the main clutch. The driving of the wheel 4 and the rotary 6 can be turned on and off by the clutch operation unit 13.

  From the mission case 1, a main operation lever 14 for projecting rear wheels 4 and the rotary gear 6 is provided. The main operation lever 14 protrudes rearward through the lever guide 16. The main operation lever 14 can be swung back and forth and left and right along the lever guide 16. As the main transmission lever 14 is swung, the traveling speed (the driving speed of the wheels 4), the driving speed of the rotary 6 and the rotation direction are changed.

  The front of the transmission case 1 is a bearing portion that accommodates the bearing of the rotary shaft 3. A bracket 17 is bolted to the bearing portion in the mission case 1 (the front end portion of the mission case 1). A gauge ring arm 19 is supported on the bracket 17 so that a gauge ring 18 is pivotally supported at the tip thereof so as to freely rotate.

  With this structure, the walking type management machine has the wheel 4 grounded, the operator has a handle, the engine 7 is operated, the main clutch is engaged, and the vehicle is driven by driving the wheel 4 on the rear side. Then, the tilling work is performed by the rotary 6 that rotates as the machine travels.

  The aircraft travels with the wheels 4 and the gauge wheels 18 in contact with the ground. Since the positional relationship between the wheel 4 and the rotary 6 is fixed, the tillage depth is determined by the amount of the rotary 6 protruding downward from the straight line connecting the ground point of the wheel 4 and the ground point of the gauge wheel 18. Therefore, the tilling depth is adjusted and maintained by setting the height position of the gauge wheel 18 by swinging the gauge wheel arm 19.

  A rib 21 protruding in the left-right direction is integrally provided at a position between the engine 7 and the rotary 6 in the mission case 1. Both base ends of a bowl-shaped lifting handle 22 having a substantially inverted U shape in plan view are fixed to the upper portion of the rib 21. The lifting handle 22 extends forward of the machine body so as to bypass the rotary 6.

  The front side of the lifting handle 22 is fixed to the upper extension end 17a of the bracket 17 described above. The operator can easily lift the aircraft by using the lifting handle 22 as a front handle. At this time, by rotating the handle 12 forward, the handle 12 is stored so as not to protrude rearward, and the overall length of the aircraft is shortened. As a result, the operator can easily perform the lifting operation of the machine body in which the handle 12 is stored in a compact manner.

  The upper portion of the rotary 6 is covered with a cover 23 that extends forward from a lower position of the engine 7. The cover 23 is an integrally molded product made of resin, and is attached as described above using the lifting handle 22 as a frame. The cover 23 is provided with a peripheral surface protruding downward on the edge side of the upper surface. The cover 23 covers substantially only the upper part of the rotary 6 along the rotation locus of the rotary 6.

  For this reason, the side of the rotary 6 is generally open, and it is possible to easily check for clogged tillage. Moreover, since there is no large-sized side plate which covers the side of the rotary 6 greatly, the cover 23 has a beautiful design.

  As shown in FIG. 3, the rib 21 protrudes in the left-right direction of the mission case 1 behind the rotary 6. For this reason, the rib 21 shields the scattered soil (mud) to the rear at the time of tillage by the rotary 6, functions as a mud scattering prevention member, and the mud scattered to the rear from the rib 21 decreases.

  For this reason, it is possible to reduce the mud generated by the worker during the plowing work and the rotary 6 scattered toward the engine 7, the transmission case 9, the wheels 4, etc. behind the rib 21. It is possible to prevent dirt and mud from adhering. Since the rib 21 constitutes the mud scattering prevention member, it is not necessary to separately provide the mud scattering prevention member, and the mud scattering prevention member can be provided with a simple structure and low cost.

  As described above, the rib 21 also serves as a mounting member for the lifting handle 22. Accordingly, it is not necessary to separately provide a member for mounting the lifting handle 22, and the mounting structure of the lifting handle 22 can be configured easily and at low cost.

As shown in FIG. 4A, a plate 24 extending the rib 21 is provided on the rib 21, or as shown in FIG. It is also possible to improve the effect of preventing mud scattering by attaching a rubber droop 27 . In this case, the rib 21 itself can prevent mud from being scattered and can also be used as the mounting portion for the plate 24 and the rubber droop 27 to easily attach the plate 24 and the rubber dripping 27.

It is a side view of a walk type management machine. It is a bottom perspective view of a walking type management machine. It is a model figure which shows the protrusion state of a rib. (A) is the side model figure which shows the state which attached the plate for an extension, and (b) the state which attached the rubber droop.

1 Mission case (cultivation transmission case)
6 Rotary (cultivation equipment)
7 Engine 21 Rib 22 Lifting handle (handle)
23 Cover

Claims (2)

In a walking type tiller provided with a tilling device (6) in front of the left and right wheels (4) and provided with a tilling transmission case (1) for transmitting driving force from the engine (7) to the tilling device (6), When the rib (21) protruding in the left-right direction that blocks the scattered soil to the rear at the time of tillage is integrally provided at a position behind the tillage device (6) in the case (1), it is provided behind the tillage device (6). A walk-type field cultivator in which the rib (21) is positioned between the left and right wheels (4) and a cover (23) covering the upper side of the tillage device (6) is provided separately from the rib (21) . The walking type tiller according to claim 1, wherein a handle (22) for lifting the fuselage is attached to the rib (21).

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